Stupidest movie you ever saw?

What was the dumbest movie you have ever seen? I don't even remember the name of the movie but it was a "horror" film and there were thses 3 kids who were bored and wanted to do something so they decided to kill someone. They would videotape it and hide it and once they died they would let it be revealed to the town and have everyone terrified. But they'd be dead of course. Just a horrible movie and the acting was scarier than the plotline.

For me, absolutely without doubt, Twilight. Fuck, even thinking about it makes me sick. That Lautner guy didn't help with with his random shirt-ripping acts, either. I feel so repulsed! I never leave movies halfway through, but I was really tempted to.